Support layout testing Web Notifications from Document and Worker contexts.

content/shell/renderer/test_runner/WebTestDelegate.h

Index: content/shell/renderer/test_runner/WebTestDelegate.h
diff --git a/content/shell/renderer/test_runner/WebTestDelegate.h b/content/shell/renderer/test_runner/WebTestDelegate.h
index 09f37f7f3e9779debfd87897dd28217a335ecee4..1b0af10b85d58b001fea4ca77faf30467097b8d1 100644
--- a/content/shell/renderer/test_runner/WebTestDelegate.h
+++ b/content/shell/renderer/test_runner/WebTestDelegate.h
@@ -11,6 +11,7 @@
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
+#include "third_party/WebKit/public/web/WebNotificationPresenter.h"
 
 #define WEBTESTRUNNER_NEW_HISTORY_CAPTURE
 
@@ -118,6 +119,13 @@ public:
     virtual void clearAllDatabases() = 0;
     virtual void setDatabaseQuota(int) = 0;
 
+    // Controls Web Notification permissions.
+    virtual blink::WebNotificationPresenter::Permission
+        checkWebNotificationPermission(const GURL& origin) = 0;
+    virtual void grantWebNotificationPermission(const GURL& origin,
+                                                bool permission_granted) = 0;
+    virtual void clearWebNotificationPermissions() = 0;
+
     // Controls the device scale factor of the main WebView for hidpi tests.
     virtual void setDeviceScaleFactor(float) = 0;